W. IUtksun and Cauomne I'km.kw 15 



appendicular parts. They are at least as tall as the types, generally 

 perhaps slightly taller, Liit their stipules, leaflets and petals are com- 

 paratively small and narrow, though thi; plants are perfectly healthy 

 and well grown. The length of the foliar parts is also reiluced, but to 

 the eye the greatest diti'erence is in width. Probably in consequence of 

 this diminished extension the stipules of the rogues end in a point 

 formed by the acutely converging edges. The stipules of the types 

 have much morn obtusC; or even rounded apices, and their bases are 

 full and bulging, 'i'he leaflets of the rogues differ similarly from those 

 of the types. In both tiie midrib ends in a fine, hair-like spine. In 

 the type this stands on an emarginate, truncated end, the curve of th(; 

 leaf springing about at right angles from the .spine. In the rogue the 

 shapes of the leaves vary considerably according to their positioii on 

 the stem. Those at the upper nodes are scarcely truncated if at all, 

 and the sides of the leaflets converge acutely to the spine. Lower 

 down the stem the leaflets approach more nearly to the typical shape, 

 but are distinguishable by their less ample development. (See 

 Plates VIII and IX, figs. 1 — 5.) 



The types with which we have chiefly worked, Duke of Albany and 

 Early Giant', have the foliar parts nnicli marbled on the upper .sides 

 with white. This marbling is due to air-spaces under the epidermis. 

 It is often developed to some extent in rogues, but never so much as in 

 tjrpes, and in the upper leaves of the rogues it is usually not present 

 at all. 



The texture of the leaves also differs, those of the rogues being 

 stiffer and harder, those of the types being more limp and cockled, 

 indicating probably a want of complete correlation between the rates of 

 growth of the several layers. 



Pods. 



The pods contain as many seeds as those of the types, but those 

 of rogues in E. G. and 1). A. with great c(»nstancy curve upwards along 

 the dorsal suture. In seeking for characters positively distinguishing 

 these rogues the curved pod is one of the most definite and easy to 

 recognize. There are varieties of peas having curved pods as a normal 

 character (e.g. the Serpette peas, Pois d'Auvergne, and Gladstone), and 

 it is possible that the curvature seen in these varieties is genetically 

 of the same nature as that of the rogues ; but however that may be, the 



' Early Giant is the name by which Messrs Sutton designate a special strain of the 

 well-known Gradus. 



